Question

A swimmer cross a river of width 400 meters in 5 minutes his speed in kilometers/hours is?

Answer 1

Answer:

4.8 kmph

Step-by-step explanation:

first convert meters into kilometers

to do that divide meters by 1 km

I.e. 400/1000 further can be written as 4/10

next convert minutes into hours

you get 5/60 hours

now use speed = distance/time

which simply gives you 4/10×60/5

which is = 4.8

hence your answer